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Alternative pathways of spirilloxanthin biosynthesis in Rhodospirillum rubrum.

ABSTRACT: Detailed studies of the properties of carotenoids isolated from diphenylamine-inhibited cultures of Rhodospirillum rubrum have revealed a number of novel structures that indicate new features of carotenoid biosynthesis in the photosynthetic bacteria. Both neurosporene and 7,8,11,12-tetrahydrolycopene undergo hydration, methylation and dehydrogenation to yield spheroidene and 11',12'-dihydrospheroidene respectively; all the intermediates in these pathways have been identified. These pathways represent alternative routes of anhydrorhodovibrin and spirilloxanthin biosynthesis.

SUBMITTER: Davies BH

PROVIDER: S-EPMC1185329 | biostudies-other | 1970 Jan

REPOSITORIES: biostudies-other

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